diff --git a/CMakeLists.txt b/CMakeLists.txt
index 74f6c6b..cf4e78d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,10 @@
 # ------------------------------
 # cmake config / project
 # ------------------------------
+include(FetchContent)
+
 cmake_minimum_required(VERSION 4.1.0)
+
 project(tinymitm LANGUAGES CXX)
 
 # ------------------------------
@@ -9,6 +12,19 @@ project(tinymitm LANGUAGES CXX)
 # ------------------------------
 option(TINYMITM_TEST "Add test project" OFF)
 
+# ---------------------
+# external dependencies
+# ---------------------
+FetchContent_Declare(
+    seallib
+    GIT_REPOSITORY https://git.neru.rip/neru/seallib
+    GIT_TAG a2784e50c7a969466fef01f9ddc8bc8c642a0a62
+)
+
+set(SEALLIB_EVENTS ON CACHE BOOL "" FORCE)
+FetchContent_GetProperties(seallib)
+FetchContent_MakeAvailable(seallib)
+
 # ------------------------------
 # proxy
 # ------------------------------
@@ -16,6 +32,7 @@ file(GLOB_RECURSE TINYMITM_SOURCES CONFIGURE_DEPENDS "src/proxy/*.cpp" "src/prox
 add_library(tinymitm STATIC ${TINYMITM_SOURCES})
 target_include_directories(tinymitm PUBLIC src/proxy)
 target_compile_features(tinymitm PUBLIC cxx_std_20)
+target_link_libraries(tinymitm PUBLIC seallib)
 set_target_properties(tinymitm PROPERTIES CXX_EXTENSIONS OFF)
 
 # ------------------------------